55 lines
1.0 KiB
Java
55 lines
1.0 KiB
Java
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import java.util.ArrayList;
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import java.util.Random;
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public class ArrayListTest {
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public static ArrayList<String> create(int n){
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ArrayList<String> ret = new ArrayList<String>();
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for (;n > 0 ; n--) {
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String random_Word = "";
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Random rand = new Random();
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int str_size = rand.nextInt(1, 50);
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for(int i =0; i < str_size; i++){
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random_Word += (char) rand.nextInt(32, 126);
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}
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ret.add(random_Word);
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}
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return ret;
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}
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public static void add(ArrayList<String> l, String s){
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l.add(s);
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}
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public static void empty(ArrayList<String> l){
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l.clear();
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}
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public static void display(ArrayList<String> l){
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System.out.print("[");
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for (String e : l) {
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System.out.print(e);
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System.out.print(", ");
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}
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System.out.println("]");
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}
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public static void main(String[] args) {
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ArrayList<String> a;
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a = create(5);
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display(a);
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add(a, "The lazy brown fox jump over the lazy fence");
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display(a);
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empty(a);
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display(a);
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add(a, "The lazy brown fox jump over the lazy fence");
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display(a);
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}
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}
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